Objective:To evaluate the effect of the ethyl acetate fraction derived from Sargassum pallidum extract against particulate matter(PM)-induced oxidative stress and inflammation in HaCaT cells and zebrafish.Methods:HaCa...Objective:To evaluate the effect of the ethyl acetate fraction derived from Sargassum pallidum extract against particulate matter(PM)-induced oxidative stress and inflammation in HaCaT cells and zebrafish.Methods:HaCaT cells and zebrafish were used to evaluate the protective effects of the ethyl acetate fraction of Sargassum pallidum extract against PM-induced oxidative stress and inflammation.The production of nitric oxide(NO),intracellular ROS,prostaglandin E_(2)(PGE_(2)),and pro-inflammatory cytokines,and the expression levels of COX-2,iNOS,and NF-κB were evaluated in PM-induced HaCaT cells.Furthermore,the levels of ROS,NO,and lipid peroxidation were assessed in the PM-exposed zebrafish model.Results:The ethyl acetate fraction of Sargassum pallidum extract significantly decreased the production of NO,intracellular ROS,and PGE_(2) in PM-induced HaCaT cells.In addition,the fraction markedly suppressed the levels of pro-inflammatory cytokines and inhibited the expression levels of COX-2,iNOS,and NF-κB.Furthermore,it displayed remarkable protective effects against PM-induced inflammatory response and oxidative stress,represented by the reduction of NO,ROS,and lipid peroxidation in zebrafish.Conclusions:The ethyl acetate fraction of Sargassum pallidum extract exhibits a protective effect against PM-induced oxidative stress and inflammation both in vitro and in vivo and has the potential as a candidate for the development of pharmaceutical and cosmeceutical products.展开更多
目的以海藻海蒿子为原料制备褐藻糖胶,并对不同的提取、分离方法进行比较,对多糖的组成和结构进行初步分析。方法海蒿子脱脂干粉分别经水提取和酸提取以获得粗多糖,粗多糖分别经乙醇沉淀法和CaCl2沉淀法进行纯化。选取多糖组分F4用Q-Sep...目的以海藻海蒿子为原料制备褐藻糖胶,并对不同的提取、分离方法进行比较,对多糖的组成和结构进行初步分析。方法海蒿子脱脂干粉分别经水提取和酸提取以获得粗多糖,粗多糖分别经乙醇沉淀法和CaCl2沉淀法进行纯化。选取多糖组分F4用Q-Sepharose Fast Flow和Sephadex G-200凝胶柱进行分级分离,高效凝胶渗透色谱法(HPGPC)鉴定纯度及相对分子质量,气相色谱分析多糖的中性单糖组成。结果F4经分级分离得到3个级分:P1、P2和P3。P1、P2和P3均为均一组分,相对分子质量分别为:494400、61500和167600;P1由岩藻糖、木糖、甘露糖、葡萄糖和半乳糖构成,摩尔百分比43.4∶33.3∶6.2∶4.3∶12.8;P2由岩藻糖、木糖、甘露糖和半乳糖构成,摩尔百分比44.4∶15.1∶23.8∶16.7;P3由岩藻糖、木糖和半乳糖构成,摩尔百分比68.9∶3.7∶27.4。结论P1、P2和P3的单糖含量均以岩藻糖为主,但其他单糖组成有较大差别。展开更多
基金This work was supported financially by Korea Environment Industry&Technology Institute through Project to make multi-ministerial national biological research resources more advanced program,funded by Korea Ministry of Environment(grant number RS-2023-00230403).
文摘Objective:To evaluate the effect of the ethyl acetate fraction derived from Sargassum pallidum extract against particulate matter(PM)-induced oxidative stress and inflammation in HaCaT cells and zebrafish.Methods:HaCaT cells and zebrafish were used to evaluate the protective effects of the ethyl acetate fraction of Sargassum pallidum extract against PM-induced oxidative stress and inflammation.The production of nitric oxide(NO),intracellular ROS,prostaglandin E_(2)(PGE_(2)),and pro-inflammatory cytokines,and the expression levels of COX-2,iNOS,and NF-κB were evaluated in PM-induced HaCaT cells.Furthermore,the levels of ROS,NO,and lipid peroxidation were assessed in the PM-exposed zebrafish model.Results:The ethyl acetate fraction of Sargassum pallidum extract significantly decreased the production of NO,intracellular ROS,and PGE_(2) in PM-induced HaCaT cells.In addition,the fraction markedly suppressed the levels of pro-inflammatory cytokines and inhibited the expression levels of COX-2,iNOS,and NF-κB.Furthermore,it displayed remarkable protective effects against PM-induced inflammatory response and oxidative stress,represented by the reduction of NO,ROS,and lipid peroxidation in zebrafish.Conclusions:The ethyl acetate fraction of Sargassum pallidum extract exhibits a protective effect against PM-induced oxidative stress and inflammation both in vitro and in vivo and has the potential as a candidate for the development of pharmaceutical and cosmeceutical products.
文摘目的以海藻海蒿子为原料制备褐藻糖胶,并对不同的提取、分离方法进行比较,对多糖的组成和结构进行初步分析。方法海蒿子脱脂干粉分别经水提取和酸提取以获得粗多糖,粗多糖分别经乙醇沉淀法和CaCl2沉淀法进行纯化。选取多糖组分F4用Q-Sepharose Fast Flow和Sephadex G-200凝胶柱进行分级分离,高效凝胶渗透色谱法(HPGPC)鉴定纯度及相对分子质量,气相色谱分析多糖的中性单糖组成。结果F4经分级分离得到3个级分:P1、P2和P3。P1、P2和P3均为均一组分,相对分子质量分别为:494400、61500和167600;P1由岩藻糖、木糖、甘露糖、葡萄糖和半乳糖构成,摩尔百分比43.4∶33.3∶6.2∶4.3∶12.8;P2由岩藻糖、木糖、甘露糖和半乳糖构成,摩尔百分比44.4∶15.1∶23.8∶16.7;P3由岩藻糖、木糖和半乳糖构成,摩尔百分比68.9∶3.7∶27.4。结论P1、P2和P3的单糖含量均以岩藻糖为主,但其他单糖组成有较大差别。
